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| Developer(s) | Kenneth Almquist |
|---|---|
| Initial release | May 30, 1989 |
| Written in | C |
| Operating system | Unix-like |
| Platform | Cross-platform |
| Type | Unix shell |
| Website | www |
Almquist shell (also known as A Shell, ash and sh) is a lightweight Unix shell originally written by Kenneth Almquist in the late 1980s. Initially a clone of the System V.4 variant of the Bourne shell, it replaced the original Bourne shell in the BSD versions of Unix released in the early 1990s.